#include <stdio.h>

int main()
{
  const float pi =3.14159265;
   const double temp = pi + 5e9;
   const float temp1 = temp - 5e9;
 if (pi == temp1)
   {
printf (" pi = pi, tout va bien !\n");
}
else
{
printf ("temp1 : %.10f \n", temp1);
printf ("temp : %.10f \n", temp);
printf ("pi !=, oups...\n");
}
return 0;
}
